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Finding the Fourth Proportional to 516,901.90, 774,561.48 and 347,795.86

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Solution

The fourth proportional to 516,901.90, 774,561.48 and 347,795.86 is: 521,161.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,901.90 : 774,561.48 = 347,795.86 : x
  2. Step 2: Convert to fraction form
    516,901.90/774,561.48 = 347,795.86/x
  3. Step 3: Cross multiply
    516,901.90x = 774,561.48 × 347,795.86
  4. Step 4: Simplify right side
    516,901.90x = 269,389,276,059.47
  5. Step 5: Solve for x
    x = 269,389,276,059.47/516,901.90
  6. Step 6: Final answer
    x = 521,161.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.